LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2003 >> Wrangler SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Engine Controls - System & Component Testing) >> Ignition Systems >> Timing Control Systems

Timing Control Systems

WARNING: This page is about a different car, the 2003 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

Ignition timing is electronically controlled by Powertrain Control Module (PCM). Base ignition timing is not adjustable with this system. PCM controlled ignition system consists of engine coolant temperature sensor, crankshaft position sensor, camshaft position sensor, ignition coil(s), manifold absolute pressure sensor and throttle position sensor. For ignition coil resistance test, see IGNITION COIL . For sensor testing, perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - LIBERTY article.